Missions beyond Low Earth Orbit, including lunar settlements, pose significant challenges to the sustainability and autonomy of crewed operations. To enable long-term human presence beyond Earth, future missions must reduce their dependency on terrestrial supply chains by developing autonomous food production and processing systems, including the ability to grow and treat staple crops such as cereals. While hydroponic cultivation of grains in extraterrestrial environments is advancing, the transformation of harvested grains into edible and storable forms remains a technological challenge. This study presents the conceptual design and preliminary assessment of an automated system for cereal processing, tailored for operation within a pressurized lunar habitat.